Finding the Fourth Proportional to 916,638.56, 1,264,942.18 and 508,716.71
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Solution
The fourth proportional to 916,638.56, 1,264,942.18 and 508,716.71 is: 702,018.50
Step by Step Solution
- Step 1: Write the proportion equation
916,638.56 : 1,264,942.18 = 508,716.71 : x - Step 2: Convert to fraction form
916,638.56/1,264,942.18 = 508,716.71/x - Step 3: Cross multiply
916,638.56x = 1,264,942.18 × 508,716.71 - Step 4: Simplify right side
916,638.56x = 643,497,224,149.83 - Step 5: Solve for x
x = 643,497,224,149.83/916,638.56 - Step 6: Final answer
x = 702,018.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.